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PHP是一種面向?qū)ο蟮木幊陶Z言,可以通過繼承、接口和抽象類來實(shí)現(xiàn)多態(tài)性行為。以下是在PHP中實(shí)現(xiàn)多態(tài)性行為的途徑:
class Animal {
public function makeSound() {
echo "Animal makes sound";
}
}
class Dog extends Animal {
public function makeSound() {
echo "Dog barks";
}
}
$animal = new Dog();
$animal->makeSound(); // 輸出:Dog barks
interface Shape {
public function calculateArea();
}
class Circle implements Shape {
public function calculateArea() {
echo "Calculating area of circle";
}
}
class Rectangle implements Shape {
public function calculateArea() {
echo "Calculating area of rectangle";
}
}
$shape = new Circle();
$shape->calculateArea(); // 輸出:Calculating area of circle
abstract class Vehicle {
abstract public function start();
}
class Car extends Vehicle {
public function start() {
echo "Car is starting";
}
}
class Bike extends Vehicle {
public function start() {
echo "Bike is starting";
}
}
$vehicle = new Car();
$vehicle->start(); // 輸出:Car is starting
通過以上途徑,可以實(shí)現(xiàn)PHP中的多態(tài)性行為,使代碼更加靈活和可擴(kuò)展。
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